I've just finished development on three projects, all related to the Sinclair Microdrive.

The first two are variants of the MIcrodrive, one for the Spectrum and Interlace 1, and one for the QL. These emulate the Microdrive hardware with an SD Card used for storage. They are both designed to fit inside an existing Microdrive case. The last project is a Microdrive address translator called the vMap. This allows mapping of internal drives to external addresses and vice versa. It's a tiny interface that sits inside the QL case.

Further details, including full user manuals, and installation instructions can be found at https://vdrivezx.com

Both the QL and ZX versions will be offered at the same price as the original Microdrive, £49.95. The vMap QL will be at £15.95.
I'll be making them in batches of 5-10 and they'll be available to buy from SellMyRetro. The first batch of 5, of each type, is done and I'll be making them available this weekend. The vMap will be provided in similar quantities.

Awaiting the final parts to build about 20 units (will be more ZX than QL this time). Fingers crossed, they'll be available in about 10 days time. Same deal as before - All up on SellMyRetro, no change in price.